reactor_panic.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@kernel.org>
 4 *
 5 * Panic RV reactor:
 6 *   Prints the exception msg to the kernel message log and panic().
 7 */
 8
 9#include <linux/ftrace.h>
10#include <linux/tracepoint.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/rv.h>
15
16__printf(1, 0) static void rv_panic_reaction(const char *msg, va_list args)
17{
18	vpanic(msg, args);
19}
20
21static struct rv_reactor rv_panic = {
22	.name = "panic",
23	.description = "panic the system if an exception is found.",
24	.react = rv_panic_reaction
25};
26
27static int __init register_react_panic(void)
28{
29	rv_register_reactor(&rv_panic);
30	return 0;
31}
32
33static void __exit unregister_react_panic(void)
34{
35	rv_unregister_reactor(&rv_panic);
36}
37
38module_init(register_react_panic);
39module_exit(unregister_react_panic);
40
41MODULE_AUTHOR("Daniel Bristot de Oliveira");
42MODULE_DESCRIPTION("panic rv reactor: panic if an exception is found.");